Just curious, is your cluster used in production or for any serious purpose?
Currently the cluster I'm talking about is being heavily used for QA testing purposes and Beta testing of applications. Kubernetes and a small operator I've written allows us to dynamically create QA servers for issues as developers finish their changes. Beta testing is easily deployed by a helm chart I wrote up.
Next we'll start up the production cluster and use it for internal applications and finally we'll be moving over our customer facing applications.